How to setup Roland quad-capture soundcard and Roland A-PRO midi controller?

Hello friends,
Your help is needed.
Just got lost. The sound of Roland A-PRO doesn't come out at all from the Roland quad-capture or from the PC's speakers.
I installed all drivers by the user manuals. The sound card itself does work at least when i check the soft instruments in the SONAR X2. But when i try to play on the midi there is nothing.
Please help